Answer: A very easy to make rocket made from a drinking straw, and launched using air pressure.
Almost everyone will be able to make this, it does not require any hard-to-find items, but also can it be made in very little time. Therefore will the rockets themselves be very easy to mass produce.
They will fly HIGH up in the air, and then land on the ground, completely safe!
Okay let's get started!
Step 1: Gathering materials
You will need to print following document to continue, though:
Download this .doc!
The rest of the materials are descriped in the picture.